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To vanderschelden: Varnish	Jamesp	::	2008-09-09 22:39
Hi ANnick The rock varnish forms on hard sandstones, especially the Navaho and Entrada sandtones in SW USA. This sandstone is very soft and eroding very quicky, so the varnish does not have time to form. James			Libya Pillar Arch (38) Jamesp (18906)
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Thread	Username		Date
To vanderschelden: Varnish	Jamesp (18906)	::	2008-09-09 22:39
:Re: To vanderschelden: Varnish	vanderschelden (30441)	::	2008-09-10 11:50

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